12" PB battery....why doesn't Apple use the iBook's?

Seriously, the iBook lasts 4 hours under regular conditions quite easily, but my 12" PB only lasts 3 to 3h20min on regular settings (ie: my regular screen brightness and CPU setting). That's disgraceful. Why not just use the iBook's battery? The new 12" iBook is almost the exact same as my rev B 12" Powerbook, so why even bother using the PB battery? Doesn't it seem obvious that the solution is just to use the iBook's? Is that how APple got the new PB battery?

Seriously, the iBook lasts 4 hours under regular conditions quite easily, but my 12" PB only lasts 3 to 3h20min on regular settings (ie: my regular screen brightness and CPU setting). That's disgraceful. Why not just use the iBook's battery? The new 12" iBook is almost the exact same as my rev B 12" Powerbook, so why even bother using the PB battery? Doesn't it seem obvious that the solution is just to use the iBook's? Is that how APple got the new PB battery?

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I suspect that the 12" PB and the iBook DO in fact use the same battery, but hardware differences between the 12" PB and the iBook cause the difference in battery life between the two machines. If this is true, the stats you're getting are completely normal.

i meant that since PB is more performant, you pay for that by having shorter battery life, because more computing power usually means more power consumption.

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that's where we got confused.

IMHO, the 12in PB doesnt give you better performance than the iBook. So i was referring to how you would get the same computing power, with poorer battery performance (as they use the same battery capacity).

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